100-450
75-170 USD
100-560 or so
100-400 USD
$350-$500, depending on the exact version, and the condition. The rifle is a Number 1, not Mark 1. Only Ruger pistols are Marks.
300-500 USD
Well, I would say in the range of $1000.Unknown caliber. Contact Ruger
No
No such Ruger ever made
You can request a owner's manual at the Ruger website.
Upload a photo of it to a gun forum to identify it, guns are not identified by their serial number, they are identified by their model name. For example : Ruger Charger, Ruger Mark, etc.
75-150 or so